Keto ferroptosis (IMAGE) Cold Spring Harbor Laboratory Caption In mice with pancreatic and colorectal cancer, keto diets slow the growth of tumors, seen here in white, by a process called ferroptosis. This kills the cancer cells by causing a lethal buildup of toxic fatty molecules, stained red. Credit Janowitz lab/Cold Spring Harbor Laboratory Usage Restrictions Attribution required License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.